11765722816 has 56 divisors (see below), whose sum is σ = 23874471936. Its totient is φ = 5750426880.

The previous prime is 11765722789. The next prime is 11765722873. The reversal of 11765722816 is 61822756711.

11765722816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978955 + ... + 2982901.

It is an arithmetic number, because the mean of its divisors is an integer number (426329856).

Almost surely, 2^11765722816 is an apocalyptic number.

11765722816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11765722816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11937235968).

11765722816 is an abundant number, since it is smaller than the sum of its proper divisors (12108749120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11765722816 is an equidigital number, since it uses as much as digits as its factorization.

11765722816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4997 (or 4987 counting only the distinct ones).

The product of its digits is 282240, while the sum is 46.

The spelling of 11765722816 in words is "eleven billion, seven hundred sixty-five million, seven hundred twenty-two thousand, eight hundred sixteen".